Internal combustion engine with partial piston twisting

Patent metadata

Field	Value
Publication number	US-10480450-B2
Application number	US-201715848180-A
Country	US
Kind code	B2
Filing date	Dec 20, 2017
Priority date	Dec 20, 2016
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

A reciprocating internal combustion engine having a line of cylinders arranged in parallel which are joined via connecting rods and pistons by means of a crank drive that is jointly mounted in a crankshaft bearing, whereby the crankshaft bearing of the crank drive can have been offset relative to the cylinder axis.

First claim

What is claimed is:

1. A reciprocating internal combustion engine comprising:
a line of cylinders arranged in parallel which are joined via connecting rods and pistons by a crank drive jointly mounted in a crankshaft bearing, the crankshaft bearing being offset relative to a respective cylinder axis of each of the cylinders such that each of the cylinders is laterally offset from a center of a same crankshaft of the crank drive, the cylinders alternatingly having a positive offset and subsequently a negative offset from the center of the same crankshaft, as seen in a lengthwise direction of the internal combustion engine.

2. The reciprocating internal combustion engine according to claim 1 , wherein the pistons are joined to the connecting rod by a piston pin arranged in such a way that the piston pin is situated outside of a mid-plane of the piston.

3. The reciprocating internal combustion engine according to claim 1 , wherein the pistons are joined to the connecting rod by a piston pin arranged in such a way that the piston pin is situated outside of a mid-plane of the piston on the counter-pressure side.

4. The reciprocating internal combustion engine according to claim 1 , wherein the pistons are joined to the connecting rod by a piston pin arranged in such a way that the piston pin is situated outside of a mid-plane of the piston on the pressure side.

5. The reciprocating internal combustion engine according to claim 1 , wherein each cylinder is equally spaced throughout the line of cylinders forming a cylinder distance and a bearing distance when twisted.

6. The reciprocating internal combustion engine according to claim 5 , wherein the bearing distance is 127 mm between the crankshaft bearing and the at least one of the cylinders.

7. The reciprocating internal combustion engine according to claim 5 , wherein the cylinder distance is 130 mm between each cylinder.

8. The reciprocating internal combustion engine according to claim 1 wherein the positive offset is a different distance than the negative offset.

9. The reciprocating internal combustion engine according to claim 8 wherein a distance of the positive offset is greater than a distance of the negative offset.

Assignees

• Deutz Ag

Inventors

• Boehmer Andreas
• Reuter Harald
• Lemme Werner

Classifications

• F16C2360/22

  Internal combustion engines · CPC title

• F02F7/0019 Primary

  Cylinders and crankshaft not in one plane (deaxation) · CPC title

• F02B75/32

  Engines characterised by connections between pistons and main shafts and not specific to preceding main groups · CPC title

• F02B75/228

  with cylinders arranged in parallel banks · CPC title

• F02B75/20 Primary

  with cylinders all in one line · CPC title